arrange, order, pigeonhole, tabulate, organize, distribute, categorize, systematize, assort, sort, coordinate, correlate, incorporate, codify, collocate, label, alphabetize, place in a category, file, range, form into classes, stratify, divide, docket, allocate, number, rate, ticket, class, dispose, assign, rank, catalog, segregate, distinguish, brand, digest, allot, analyze, regiment, name, group, tag, type, put in order, break down, index, grade, match, size, reduce to order, introduce a system; see also file 1, list 1.
Antonyms disorganize, disorder*, disarrange.